Nissan Tiida C11. Manual - part 909

HAC-300

< SYMPTOM DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

INSUFFICIENT COOLING

>> GO TO 9.

9.

CHECK REFRIGERANT PURITY

1.

Connect recovery/recycling equipment to vehicle.

2.

Confirm refrigerant purity in supply tank using recovery/recycling and refrigerant identifier.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Check contaminated refrigerant. Refer to 

HA-21, "HFC-134a (R-134a) Service Procedure"

.

10.

CHECK FOR EVAPORATOR FREEZE UP

Start engine and run A/C. Check for evaporator freeze up.

Does evaporator freeze up?

YES

>> Perform performance test diagnoses. Refer to 

HAC-300, "Performance Test Diagnoses"

.

NO

>> GO TO 11.

11.

CHECK REFRIGERANT PRESSURE

Check refrigerant pressure with manifold gauge connected. Refer to 

HAC-303, "Test Reading"

. 

Is the inspection result normal?

YES

>> Perform performance test diagnoses. Refer to 

HAC-300, "Performance Test Diagnoses"

.

NO

>> GO TO 12.

12.

CHECK AIR DUCTS

Check ducts for air leaks.

Is the inspection result normal?

YES

>> System OK.

NO

>> Repair air leaks.

Performance Test Diagnoses

INFOID:0000000001547375

PERFORMANCE TEST DIAGNOSIS

INSUFFICIENT COOLING

HAC-301

< SYMPTOM DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

*1

HAC-302, "Performance Chart"

*2

HAC-302, "Performance Chart"

*3

HAC-303, "Trouble Diagnoses for 
Unusual Pressure"

*4

HAC-226, "Air Mix Door Motor Diag-
nosis Procedure"

RJIA1601E

HAC-302

< SYMPTOM DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

INSUFFICIENT COOLING

Performance Chart

INFOID:0000000001547376

PERFORMANCE CHART

Test Condition

*1

HA-32, "Removal and Installation of 
Compressor - MR18DE"

 or 

HA-34, 

"Removal and Installation of Com-
pressor - HR16DE"

 or 

HA-35, "Re-

moval and Installation of Compressor 
- K9K"

*2

HAC-233, "Front Blower Motor Com-
ponent Function Check"

*3

EM-15, "Checking"

 (HR16DE) or 

EM-

142, "Checking Drive Belts"

 

(MR18DE)  or 

EM-263, "Inspection 

and Adjustment"

 (K9K)

RJIA3107E

INSUFFICIENT COOLING

HAC-303

< SYMPTOM DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Testing must be performed as follows:

Test Reading

INFOID:0000000001547377

TEST READING

Recirculating-to-discharge Air Temperature Table

Ambient Air Temperature-to-operating Pressure Table

*1: In the blower motor low-speed control
*2: In the blower motor high-speed control

Trouble Diagnoses for Unusual Pressure

INFOID:0000000001547378

TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE 

Vehicle condition

Indoors or in the shade (in a well-ventilated place)

Doors

Closed

Door window

Open

Hood

Open

TEMP.

Max. COLD

Mode control dial

 (Ventilation) set

Intake switch

 (Recirculation) set

 Blower speed

Max. speed set

Engine speed

Idle speed

Operate the air conditioning system for 10 minutes before taking measurements.

Inside air (Recirculating air) at blower assembly inlet

Discharge air temperature at center ventilator

°

C (

°

F)

Relative humidity

%

Air temperature

°

C (

°

F)

50 - 60

20 (68)

7.2 - 9.1 (45 - 48)

25 (77)

11.4 - 13.8 (53 - 57)

30 (86)

15.5 - 18.4 (60 - 65)

35 (95)

20.3 - 23.7 (69 - 75)

60 - 70

20 (68)

9.1 - 10.9 (48 - 52)

25 (77)

13.8 - 16.2 (57 - 61)

30 (86)

18.4 - 21.3 (65 - 70)

35 (95)

23.7 - 27.1 (75 - 81)

Ambient air

High-pressure (Discharge side)

kPa (bar, kg/cm

2

, psi)

Low-pressure (Suction side)

kPa (bar, kg/cm

2

, psi)

Relative humidity

%

Air temperature

°

C (

°

F)

50 - 70

20 (68)

843 - 1,036 *1

(11.08 - 13.63, 8.6 - 10.6, 122 - 150)

159.0 - 194.0

(1.59 - 1.94, 1.62 - 1.98, 23.1 - 28.1)

25 (77)

1,094 - 1,338 *1

(10.94 - 13.38, 11.2 - 13.6, 159 - 194)

196.3 - 240.0

(1.96 - 2.40, 2.00 - 2.45, 28.5 - 34.8)

30 (86)

1,298 - 1,590 *1

(12.98 - 15.90, 13.2 - 16.2, 188 - 231)

248.0 - 302.7

(2.48 - 3.03, 2.53 - 3.09, 36.0 - 43.9)

35 (95)

1,383 - 1,688 *2

(13.83 - 16.88, 14.1 - 17.2, 201 - 245)

308.8 - 377.4

(3.09 - 3.77, 3.15 - 3.85, 44.8 - 54.7)

40 (104)

1,628 - 1,988 *2

(16.28 - 19.88, 16.6 - 20.3, 236 - 288)

377.4 - 461.2

(3.77 - 4.61, 3.85 - 4.70, 54.7 - 66.8)